Learning objective
D.1.1—Kepler’s three laws of orbital motion
• Kepler’s three laws of orbital motion.
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D.1 Gravitational fields
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Learning objective
D.1.2—Universal gravitation
• Universal gravitation: F=Gm1m2/r^2 for point masses.
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Learning objective
D.1.3—Point-mass approximation
• Extended bodies can be treated as point masses only under suitable conditions.
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Learning objective
D.1.4—Gravitational field strength
• Gravitational field strength: g=F/m=GM/r^2.
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Learning objective
D.1.5—Gravitational field lines
• Gravitational field lines.
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